I would request you to check all the required legal approvals from local body and most importantly, RERA approval. In absence of RERA approval, a project is considered as illegal and some basic amenities will discontinue by local body or municipal corporation.
No, there is no water problem near Janapriya Silver Crest, Kapra, Hyderabad. Sainikpuri is a great area. I have been living here for almost 10 years now, and I have seen it grow so much. Not just in terms of civic developments, but also property capital appreciation wise. Take an example of Janapriya Silver crest itself, the rates have gone up by 17% since it was launched in 2012.
Yes, The neighbourhood is pretty great too. I would say it is an excellent place to live with your family. There are few areas in Sainikpuri who faced a little drought this summer, but I guess since you are planning to invest in a gated community, you would not have to worry too much about that.